Okay, I might have the soloution.
Open IE and go to Tools, Internet Options. From here, go to the Advanced tab.
Go down the list, and under animations, tick the 'Play Animations in webpages' box.
If other things were changed, you could also press 'Restore to Defaults' which would reset it to how it was when you first got the browser, which would have this ticked.
Finally, just press Apply, and Okay, and then restart the browser and you should be done!
I hope this helps